Can not create any user on the chef server after deleting pivotal

Hello,

I've created users with the admin rights using:
chef-server# chef-server-ctl user-create
chef-server# chef-server-ctl user-create myadmin My Admin myadmin@test.com mypassword -f myadmin.pem
chef-server# chef-server-ctl org-user-add myorg myadmin --admin

and then deleted the original pivotal user as I did not think this was needed anymore:

chef-server# chef-server-ctl user-delete pivotal

BUT now I can't create any user:

chef-server# chef-server-ctl user-create myotheradmin My OtherAdmin myotheradmin@test.com mypassword -f myotheradmin.pem -o myorg
ERROR: Failed to authenticate to https://127.0.0.1:443 as pivotal with key /etc/opscode/pivotal.pem
Response: Failed to authenticate as 'pivotal'. Ensure that your node_name and client key are correct.

OK expected. But it fails also with my previous admin user:

root@chef-server:~# chef-server-ctl user-create myotheradmin My OtherAdmin myotheradmin@test.com mypassword -f myotheradmin.pem -o vidm -u myadmin -k myadmin.pem
ERROR: You authenticated successfully to https://127.0.0.1:443 as myadmin but you are not authorized for this action
Response: missing create permission

How do I set the "create" permission for users ?
Looks like knife acl does not do that ?

Thanks
Fanny

Start with the chef-server-ctl user-create and user-delete commands and the reported authentication and missing-create-permission responses; compare them with the org-user-add and knife acl entry points mentioned in the issue. Reproduce the sequence after deleting pivotal, then determine whether the failure is expected permission behavior or a defect. Done means the supported recovery or permission-management path is identified and verified.